Exhaust-gas-control valve



June 5, 1928.

A. B. SCHLESINGERA AEXHAUST GAS CONTROL VALVE Filed March 5, 1927Patented .lune 5, 19,28. I, f y 'y UNITED sTArEs PATENT oFFlcE.-

AuGusfnB-somzEs1-NGER, 0F DEffRoIfrMi-crr1GAN-,AssmNonio .simiicaiA CABLND l' roUNznnY morons COMPANY; ern-EW YORK, Ni. Y A, CORPORATION orDELAWARE.

:e 'ExHaiirfsiriGas-coinrror'. visum;

Appnatibu med imita, 1927i lserial mmvasfmi" 1 'lieaccompanying'drawingsillustrate the lislfling"` communication between-fthe engine preferred'forni of the' invention; tl'iougli it exhaust pipe 6 and exhaustlnuiller`71. The is to be iinderstoodthat tli'e invention` is'no'trear'en'd of tle conduit 5 isforrned with' an' limited to the exactdetails of construction int rall plate' extension 8"liavingr any annu- 5shownaancl described,` as it isfobviousthat lar ange or shoulderQeInb'racingtihe inner' 60 various' niodilications thereof Wit-hinVV theend of'fthexniuer 7 `Clamping" bolts l0 seop're 'ofi thefola-iinsivi'lloocu'r toperso'ns ezt-tendingr longitudinally of the inuier' 7iSkilled'iufhefmf, j have their inner endspassed through. tfhe'fIii/said'drawings:"' n. corners of the plate 8- and receive nutsy l0Figurel is ai'verticalsectional'vievif'of an 1Qy for securing the' plateon the ni'uiiier;y 65

` exhaust'g'a's' control yvalve' construotedain ac- The opposite 'endsot the boltsH 10 pass cordan'c'e with myl invention and associatedthrough andl engage themutller head?" at the' with the exlbaustline andniullier'oi'l anl autorear vend of the' Inuflier (not sho'Wnl); `A

mobile; f i y stuiiln "box ll islforrned with the opposite`lligr'2`isavertica'lsectionalview takenon endo' theoonduit orcylinder"andi receives 70 line QQ-QQfFigl; v oneendov theeXhaustfpipe-and-isprovided' Eig/,Bis atop'plianvievvof theinvent'lon; With lateralperforated ears li-'reoeiving Fig'. L is 'a perspective of the valve'el'e'- bolts@ 13* engfigingr ai stungboir gla'nd 14 ment; and y vaccommodate ioni' the: pipeii and" holding it V'Figi. 5 is" a'perspective'o tliejvalvel-pl'ate in clamping' engagementwitfhpacking' 1575 or seat. I V p 1 between the stuffing box' and exhaust-A pipez' finvention 'relates' to valves andi more Nutsllare threadedupon thebolts-13. particularly' t'o 'a valve for controlling the For thepurposeoff conducting exhaust passage ofexliaust gases eitliertoanautogasesfrorntheconduitf5ftoa pipe 171 leading inobile lieateror totheatmosphere: :v toanfautoniobilefheater' ('notshown) a cylin- 80 '.Th'einvention` has as" its principal object diical'housing'or casing l'8isprovidedfthe the provision oan exhaust gas control-valve latterbeingffbrmed With-'a reetangular'open Wliieliis entirely r'eei'roinkvibrationjduetto base1'19 ,lizrving pairsol lateral projecting tlieexhaustfgas'pulsations and toI the'hig'h `perforated ears-QO The uppervtace of the temperature tlevalvetis-subjectedto bythe conduitorkcylinder '5A is providedigwith a S5 l lieat of" these exhaust gases.I 'rectangularopening 21 extending" substan- The invention also'contemplates a valve tially" the' length of* theconduiti'or cylinderassembly.. for controlling the passage ofeXL and hasa rectangularlaterally' extending haust' gases' toanl automobile liea'teror to-anlan'gey 22 :l`o'r1r`1ed` around theL edges of this exhaust muierwhichislfree from distortion opening. The cylindrical'` easing* orcasting 00 the lieat' 'otexhaustl gases orflroinl other 'I8 is ositionedtransversely' olf the conduit Acauses and'tlfusini'proper closing orseating or cylinder 5-Witli its-base 19 in'- registration iseliii'iina'ted'` i i with the" fiange 22 andi is" lie'lcli thereon by n"Furtherytlieinvention' provides/a valve fastenings 245 passing' throughtheA ears 2() 40 element which is punched" out of .suitableandie'n'gagingtlieiange22. 95 A sheet' material and. utilizes theremainder' of As' sliownin lligure"..o'ne'iendofx the" casi the sheet"material" from` which' the'valve is 'ing' 18A threadedlyrreceivs" one.endA of? the punched, as' a valve' plate 01" frame, andpipe17'as-'ae25whi1ethe opposite enduit-he vtliereb'yf keeping the' costof' manufacture' to casing 'receivesa threaded:V plugf'26'ar-ranged a.minimum. i to be' r'einoi'fedY forthe; purpose of' cleaning 100 Anotherobject ot th'isiiivention is to prothe intel-iop 0f theV device or thevalve elevide` ak valve' assemblyfor oonti'olling'- .theinenttobefhereinafterdeseribed;`

passage of-gases from an exhaust' line which The valve ,assemblyemployed With# this @SSlblf ViS S0 OI'Hled' as to preventV the inventionis of particular*l type more clearly acouniulation of carbon orotherlfore'ign inatshown in Figsil', et and; and the saine CoIn- 105 tenthereon whereby the valve n'iay be always prises a seat'v 28' and avalve 2 9; These.' ele- .reta'ined in closer seatingv relation Withlitsinentsare complementary asis usuali invalve valvefseat i i y,oonstructions and are each-formed ofi metal Refer-ring lto the inventionin"Y detail; a havingV high` corrosion resistant propertiesfoy-linder-or conduit 5 is. prov-idedifor estabsuoli;v for example,as'lstain'less steel; .T0 rello duce the cost of manufacture and at thesame' ing elements are complementary. The blanlf:

27 ma)7 initially be of the required` size and provided with openings 30for thereception ofsuitable fasteners, such as thebolts 24, to securethe finished valveseat to the conduit 5, suitable gaskets i3 beingemployed to effect a gastight connection. v y

i Journaled in the conduit or cylinder 5 adjacent one end of its opening21 is a rock shaft 31. vBronze bushings A,3,2 are provided to obviaterusting of ends oi' the roch shaft 31. A valve support or arm is securedto the rock shaft 81 and to which arm the valve element 29 is attached.The valve support or arm is welded to the rock shaft '31 while the valveelement-is secuied in a lilie manner. A `plurality of openings 3-1 areprovided in the valve element totalie the weld asdesig nated at 35. v v

In the actual manufacturing of the device, the valve support or arm 33iswelded to the rock shaft while the latteris in position in the conduitor. cylinder 5, and the valve element is subsequently welded. `Thismanner vof securing the rock shait, valve support or army andA valvetogether provides a single integral unit which eliminates distortion byheat and the consequent vibration or improperseating of the valveelement.

In order to close the spacek between the 4inneredge of the valve element29 and the lower side wall ot' the casing 18 when the valve is intheopen position shown in Figure 1, a'laterally extending baiile wallextends from this side wall of the lcasing and terminates vin adown-turned flange 37 with which the inner edge of the valve ele.- inentcontacts. l y

A- lever 38 is attached intermediate its ends to the rock shaft 31 at apoint exteriorly 'of the cylinder or conduit 5 and hasoperativeconnection with an operating rod 39.`

To normally returnthe valveto closed yposition and retain it in suchposition, a contractile spring 40, has one end attached to the lower endof the lever 38 as indicated at 4:1, while its opposite end is` anchoredto a lug 112 formed on the stuthng box 11.

- With mylinvention, it will be seen that the products of combustionpass through the conduit orcylinder 5 and discharge into the muiiier 7in, the usual manner. However,

`when it is desired to ldirecttlie products of combustion into the pipe17` to enter the 'heater (not shown),sthe operating rod 39 is moved in alongitudinal direction to bring thevalve to an angular position acrossthe conduit or cylinder ,as shown 1n Figure 1,

directing the products of combustion upwardly into the casing 18 whencethey pass into the pipe 17. It will also be apparent that this inventionprovides valveand valve seat which are greatly resistant to corrosionand hence of much greater durabilityr therewith,"means for obstructingthe passage ot exhaust gases through the conduit and'for directing theminto the casing comprising a valve plate between said casing andconduit, and provided with an opening, a baille in said casing, a valvenormally positioned in said valve plate, and means in said conduit iorpivotally supporting said valve to peri mit the same to swing to closethe assage through the conduit with an exten ed end adjacent said pivotin contact with said baiiie. Y' *i 2. In a device of the kind described'com prising a conduit arranged to normally establish communicationbetween the exhaust line of an engine and its muiiier, a casingsupported on the conduit and havingfcominunication therewith, a valvesupport pivotally mounted in the conduit, a valve mounted on saidsupport withits ends extended beyond said support and adapted to closethe conduit Vto prevent passage of exhaust gases tosaid muiiier, andmeans formed in said casing and so positioned Ias to Contact with theextended rear end of said valve whenthe latter is in lowered position toclose the conduit to passage of exhaust gases to the muiiier above thevalve support. f

3. In a device of the kind described ycornprising a conduit interposedbetween the'exhaust pipe and muiiler of an internal combustion engine.and a casing connected to the conduit, a valve plate interposed betweenthe conduit and casing, `a valve normally positioned in the valve plateand means supporting said valve intermediate the ends thereoiI to permitthe same to swing in an arc with the forward end of saidV valvepositioned in the conduit to close the same against passage of gasestherethrough and with the upper end above said yconduit `to cooperatewith meansin the casing to close the upper portion of' said conduitagainst v and arranged intermediate the ends thereof,

and a rock shaft'towhich'the supporting arm is connected, the rear endof the valve element extending beyond the rock shaft Whereby uponrocking of the shaft the valve element rotates in its entirety in anarc.

5. A device of the kind described comprising a conduit arrangedintermediate the exhaust pipe and a muffler7 a casing secured to theconduit and communicating therewith and receiving pipes, an aperturedplate se- 10 cured to the conduit by said casing to define a valve seat,a rocker arm mounted in the conduit, a Valve supporting element securedto the rocker arm, and a valve secured tothe supporting,r element andadapted to be received in the aperture in the plate for normally closingcommunication from the conduit to the casing.

In Witness whereof I have hereunto set my hand. i AUGUST B. SCHLESINGER.

